You isolate a compound that is insoluble in water, has alternating single and double bonds, and has a
bright orange color. You correctly conclude that this compound is a:
a. protein.
b. nucleic acid.
c. polysaccharide.
d. steroid.
e. carotenoid.
E
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Isotopes of the same element differ from each other in the number of
a. electrons and protons. b. neutrons only. c. protons and neutrons. d. electrons only. e. protons, neutrons, and electrons.
Endergonic reactions require the ______ of energy, while exergonic reactions ______ energy.
a. release; input b. input; release c. output; input d. creation; destruction
What are some characteristics of polyploidy plants?
a. They tend to be weaker and smaller than diploid plants b. They tend to be bigger and stronger than diploid plants c. They tend to be weaker, but bigger than diploid plants d. They tend to be smaller, but stronger than diploid plants
Which term refers to muscles that are attached to bones, and cause bones to move at their joints when they contract?
A. skeletal muscles B. smooth muscles C. involuntary muscles D. ligament tissues E. cardiac muscles